[  OK  ] Reached target Login Prompts.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.117' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   46.234619][ T8462] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024)
[   46.244434][ T8462] NILFS (loop0): mounting unchecked fs
[   46.250301][ T8462] NILFS (loop0): invalid segment: Magic number mismatch
[   46.257808][ T8462] NILFS (loop0): unable to fall back to spare super block
[   46.265122][ T8462] NILFS (loop0): error -22 while searching super root
executing program
[   51.400030][ T8468] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024)
[   51.409847][ T8468] NILFS (loop0): mounting unchecked fs
[   51.416143][ T8468] NILFS (loop0): invalid segment: Magic number mismatch
[   51.423337][ T8468] NILFS (loop0): unable to fall back to spare super block
[   51.430725][ T8468] NILFS (loop0): error -22 while searching super root
executing program
[   56.578378][ T8474] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024)
[   56.588195][ T8474] NILFS (loop0): mounting unchecked fs
[   56.594352][ T8474] NILFS (loop0): invalid segment: Magic number mismatch
[   56.601528][ T8474] NILFS (loop0): unable to fall back to spare super block
[   56.608651][ T8474] NILFS (loop0): error -22 while searching super root
executing program
[   61.750060][ T8480] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024)
[   61.759979][ T8480] NILFS (loop0): mounting unchecked fs
[   61.765871][ T8480] NILFS (loop0): invalid segment: Magic number mismatch
[   61.773067][ T8480] NILFS (loop0): unable to fall back to spare super block
[   61.780378][ T8480] NILFS (loop0): error -22 while searching super root
executing program
[   66.920654][ T8486] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024)
[   66.930476][ T8486] NILFS (loop0): mounting unchecked fs
[   66.936337][ T8486] NILFS (loop0): invalid segment: Magic number mismatch
[   66.943514][ T8486] NILFS (loop0): unable to fall back to spare super block
[   66.950779][ T8486] NILFS (loop0): error -22 while searching super root
[   71.964165][ T8459] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff888111f175c0 (size 32):
  comm "syz-executor863", pid 8480, jiffies 4294943439 (age 12.360s)
  hex dump (first 32 bytes):
    6c 6f 6f 70 30 00 00 00 00 00 00 00 00 00 00 00  loop0...........
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002f79dc46>] kstrdup+0x36/0x70
    [<000000004ecc5259>] kstrdup_const+0x53/0x80
    [<000000003e4a93d8>] kvasprintf_const+0xc2/0x110
    [<00000000dc96168a>] kobject_set_name_vargs+0x3b/0xe0
    [<00000000d33c8dbc>] kobject_init_and_add+0x6d/0xc0
    [<000000001b40b2a2>] nilfs_sysfs_create_device_group+0x98/0x3a0
    [<000000007b6e1b10>] init_nilfs+0x523/0x680
    [<00000000ef16760e>] nilfs_mount+0x51b/0x890
    [<00000000a51d8cb6>] legacy_get_tree+0x2b/0x90
    [<00000000b721d1a7>] vfs_get_tree+0x28/0x100
    [<0000000026fef72a>] path_mount+0xc5e/0x1170
    [<0000000079249a51>] __x64_sys_mount+0x18e/0x1d0
    [<0000000012b348ac>] do_syscall_64+0x2d/0x70
    [<00000000266046d2>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888111f179a0 (size 32):
  comm "syz-executor863", pid 8486, jiffies 4294943956 (age 7.190s)
  hex dump (first 32 bytes):
    6c 6f 6f 70 30 00 00 00 00 00 00 00 00 00 00 00  loop0...........
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002f79dc46>] kstrdup+0x36/0x70
    [<000000004ecc5259>] kstrdup_const+0x53/0x80
    [<000000003e4a93d8>] kvasprintf_const+0xc2/0x110
    [<00000000dc96168a>] kobject_set_name_vargs+0x3b/0xe0
    [<00000000d33c8dbc>] kobject_init_and_add+0x6d/0xc0
    [<000000001b40b2a2>] nilfs_sysfs_create_device_group+0x98/0x3a0
    [<000000007b6e1b10>] init_nilfs+0x523/0x680
    [<00000000ef16760e>] nilfs_mount+0x51b/0x890
    [<00000000a51d8cb6>] legacy_get_tree+0x2b/0x90
    [<00000000b721d1a7>] vfs_get_tree+0x28/0x100
    [<0000000026fef72a>] path_mount+0xc5e/0x1170
    [<0000000079249a51>] __x64_sys_mount+0x18e/0x1d0
    [<0000000012b348ac>] do_syscall_64+0x2d/0x70
    [<00000000266046d2>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

[   74.060271][ T8459] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)